Dynamic properties of ceramic materials

Technical Report · Wed Feb 01 04:00:00 EST 1995

DOI:https://doi.org/10.2172/72964· OSTI ID:72964

Grady, D E ^[1]

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1. Sandia National Labs., Albuquerque, NM (United States). Experimental Impact Physics Dept.

The present study offers new data and analysis on the transient shock strength and equation-of-state properties of ceramics. Various dynamic data on nine high strength ceramics are provided with wave profile measurements, through velocity interferometry techniques, the principal observable. Compressive failure in the shock wave front, with emphasis on brittle versus ductile mechanisms of deformation, is examined in some detail. Extensive spall strength data are provided and related to the theoretical spall strength, and to energy-based theories of the spall process. Failure waves, as a mechanism of deformation in the transient shock process, are examined. Strength and equation-of-state analysis of shock data on silicon carbide, boron carbide, tungsten carbide, silicon dioxide and aluminum nitride is presented with particular emphasis on phase transition properties for the latter two. Wave profile measurements on selected ceramics are investigated for evidence of rate sensitive elastic precursor decay in the shock front failure process.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 72964
• Report Number(s): SAND--94-3266; ON: DE95010333
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM NITRIDES
BORON CARBIDES
CERAMICS
COMPRESSIBILITY
CRYSTAL-PHASE TRANSFORMATIONS
DATA ANALYSIS
DEFORMATION
DYNAMIC LOADS
EQUATIONS OF STATE
EXPERIMENTAL DATA
FAILURES
FRACTURE PROPERTIES
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MICROSTRUCTURE
SHOCK WAVES
SILICON CARBIDES
SILICON OXIDES
TENSILE PROPERTIES
TUNGSTEN CARBIDES